One insurer could not escape equitable subrogation on the basis of its "other insurance" provision on the theory that the second insurer was responsible for all of the co-insured's defense costs. Underwriters of Interest v. ProBuilders Spec. Ins. Co., 2015 Cal. Ct. App. LEXIS 936 (Cal. Ct. App. Oct. 23, 2015).
Underwriters issued a CGL policy to Pacific Trades, a contractor, that was in effect between October 23, 2001 and October 23, 2003. ProBuilders also issued policies to Pacific Trades, with effective dates between December 9, 2002 and December 9, 2004. The two sets of policies provided for indemnification against liability for many of the same risks.
ProBuilders's policies contained an "other insurance" clause that stated ProBuilders had the right and duty to defend "provided that no other insurance affording a defense against such a suit is available to you." Underwriters' policy also included other insurance provisions stating that Underwriters would also be excluded from any duty to defend Pacific Trades.
Pacific Trades was sued for damages to multiple separate single family homes caused by construction defects allegedly due to its negligent acts or omissions. ProBuilders refused to defend because Pacific Trades was being defended by Underwriters. Underwriters demanded that ProBuilders participate in funding the defense, but ProBuilders never did so.
After the underlying suit was settled, Underwriters sued ProBuilders seeking equitable contribution for some of the defense costs paid by Underwriters. The trial court granted summary judgment to ProBuilders, concluding that the "other insurance" clause in its policies obligated ProBuilders to defend only if no other insurance was available to Pacific Trades.
On appeal, the court noted that ProBuilders sought to take advantage of an "escape clause," under which it could escape providing a defense if the insured had other coverage available to provide a defense. Escape clauses were discouraged, however, and generally not given effect in actions where the insurance company who paid the liability was seeking equitable contribution from the carrier who was seeking to avoid the risk it was paid to cover.
The court adhered to the modern trend of requiring equitable contribution on a pro rata basis from all primary insurers regardless of the type of "other insurance" clause in their policies. ProBuilders provided coverage for a different period of time from Underwriters's policies. The allegations asserted against the common insured included some claims for which ProBuilders potentially provided the only primary policy available to Pacific Trades. Because giving effect to ProBuilders "other insurance" provision would result in imposing on Underwriters the burden of shouldering that portion of the defense costs attributable to claims arising from a time when ProBuilders was the only liability insurer coverage Pacific Trades, the escape clause would be disregarded and Underwriters could seek equitable contribution from ProBuilders.
Therefore, the trial court's judgment was reversed.
In a slightly different twist, the Hawaii Supreme Court determined that where two primary insurers have competing "other insurance" provisions, each must defend their insured. See Nautilus Ins. Co. v. Lexington Ins. Co., 132 Haw. 283, 321 P.3d 634 (2014). See prior post here.